DE1524373B2 - Parallel printing unit - Google Patents

Description

The object of this invention is to provide a fast parallel printing unit specify with a simplified structure, which a pressure storage unit with smaller Has access time.

This object is achieved according to the invention in that an address buffer memory is provided for receiving address signals which are assigned to the data signals entered in the data buffer memory in the next free memory location, are generated when they are entered and correspond to the print columns the circulation of the stored address signals is interconnected to form an address ring memory, that the circulation of the address ring memory is synchronized with the circulation of the data ring memory and that when a comparison signal from the comparison circuit occurs, the address signal located in the address register at this point in time the pressure hammer of the column assigned to the address for the Controls stop.

Further developments of the subject of the application are given in the subclaims.

Two delay lines or are used for buffer storage, decoding and address counting Runtime chains used; - their "beginning and end each connected by a register to insert coded words into the delay line. One of the delay lines is primarily for storing data or print line characters (Type symbol) provided; the other is for storing addresses. Both delay lines are synchronized so that any particular one circulating over a data delay line Character is in the data register at the right time, i.e. i.e. if the corresponding address for the data character is contained in the address register in the address delay line.

The addresses of the characters that appear on the data delay line are derived from an address counter that starts with each character that he receives, is incremented; however, if there are several spaces in one print line are to be inserted, a special character decoding network is used to identify a specific Determine or recognize binary character string. The binary string contains a jump instruction, which has a bit combination in its least significant bit positions that causes the address counter, to jump on in multiples of 8 counting steps. In this way, up to 120 spaces can be created can be inserted into a print line with a total of 136 columns.

To make it easier to align the print hammer, you can use repetitive character arrangements are entered into the printer, with the help of several switches that are coded so that they cause the address counter to display the column addresses in steps of eight instead of the usual steps of one to count on. In this way a character can be entered in the data register, while the corresponding address register receives an address sequence eight columns further. That as The next character to be saved is then also 8 characters apart; the second character however, it is printed right at the beginning in a different column. That way you can repetitive character strings are entered into the print engine and printed out in order to align to facilitate the print hammers.

The invention will now also be described with reference to illustrations of an exemplary embodiment.

Fig. 1 is a schematic block diagram for Description of the mode of operation of the synchronized delay lines or delay chains;

F i g. Fig. 2 is a schematic block diagram of parts used to describe the jump counting sequence;

ίο F i g. 3 is a schematic block diagram for Description of the sequencing of the repeating characters.

The lines representing the connections of the blocks in Figures 1-3 are weighted

1-5, indicating that multiple lines (um To transmit signals in parallel) or relatively few or only a single line is used (to transmit control signals, etc.).

In Fig. 1 shows the printing unit according to the invention in a simplified block diagram. It essentially contains a group of data and parity bit receivers RCXO-S, a buffer memory logic or a buffer memory switching unit 15, a type drum hammer control unit 18 and the mechanical printing device 21. An external operating device (not shown), which is one of the The data processing system connected to the printer according to the invention can act, supplies the information to be printed out, while the printer works in what is known as "on-line" mode. In the external operating device, however, it can also be a buffer, e.g. B. a tape recorder act in which, in addition to the information to be printed out, the required printing unit control commands to make the printing unit work in off-line mode are stored.

The external operating device essentially supplies the buffer memory switching unit 15 and the printing unit via an input / output unit, of which only the data and parity receivers RCXO-S are shown, with data and command signals. The input and output unit and also the entire printing unit is actually more extensive than in FIG. 1 shown; in order to explain the invention, however, only the most necessary things need to be described here. The in Fig. 1 receives addresses, each of which corresponds to a character for which one of the print hammers 106 (control unit 21) in a print hammer line is to be actuated. The hammer control unit contains a decoding matrix 98 which receives information from the buffer memory switching unit 15 which corresponds to the address of a character to be printed out. The decoding matrix 98 receives the address information and supplies the required output pulses to hammer driver stages 99 which operate the respective hammers 106. As a result, the respective hammers strike the writing paper against the type drum 105 to print a character on the paper. The hammer driver stages 99 are synchronized by a hammer clock control 101 , which receives its clock pulses CHPT directly from the mechanical printing device (disk 108). A character register 102

receives signals CHP from the mechanical printing device (disk 108) which indicate those "characters that are just coming into the printing position. The character register 102 " receives coded character signals in

In the form of character pulses from the mechanical also other conventional monitoring information printing device. The character register can supply functions, e.g. B. signals that indicate that Glüheinem end-of-line reference signal ZR from the mecha-pear photoelectric readers blown niche printing device (disk 109) are deleted, "paper low" - or "paper out" signals, etc. are. This signal indicates that the print or 5 The signals that the print unit has completed one revolution from the outer type drum and that the operating device receives the character sequence coming into the print position via the data and parity receiver RCXO-S is being repeated . printing information as well as command information

The in F i g. 1 shows the mechanical printing devices shown. The codes used for the transmission of the character and direction contain a printing or type drum 105, io command information can be very different in several columns with characters or types; the efficiency with which is seen. In the embodiment chosen for illustration, the printing unit works, however, 136 columns can be used by twisting, with each formation of a uniform command sequence consisting of a considerable number of columns of 64 types, which are increased in the corresponding column. In order to fully understand the meaning of this command, the column about the scope of the type drum is followed in the appendix. The type drum contains a series of descriptions of the various commands and commands with 136 "A" s, 136 "B" s etc. The type drum codes are briefly described in the for illustration is rotated around its axis, so that with each printing unit selected be used. The rotation of the type drum one after the other all the booklet information and command codes are fed to the bar of the alphabet and all other characters from the 20 printing unit in the form of six-digit binary characters and a hammer opposite the type in question - a parity bit that comes from the unit column. The print hammers 106 RCXOS are added, are in a line along the type drum each. In the buffer memory switching mechanism 15 are two

arranged opposite a column; Provided that buffer storage run-time chains 80 and 81 are provided in this way, each hammer stands at one revolution of the type of run-time chain. pentrommel receives and stores once each type of a column counter-printed characters and the other stores the addresses via. An ink ribbon (not shown) and paper of the respective printed characters. The two runtimes are arranged between the type drum and the print chains each form hammering together with a register; so a line of text through 82 and 83 can have a ring buffer. An address counter actuation of the respective hammer at the same time 30 85 receives signals which indicate which particular rotation of the printing drum is being printed on the paper characters on the printing drum 105 are being decoded by the hammers on the ink ribbon and hammer control unit 18. Hit an address paper when the correct character faces the sen buffer memory 88, which faces the address register print hammer. 83 is connected, the decoded print

The mechanical printing device contains an extra drum address and identifies it as the address of a character to be printed on the character disk 108 by a plurality of holes.

coded formation to generate coded signals CHP (also the data and parity receiver unit RCXO-S

CHPT) with the help of a photoelectric scanning process is to be generated via an AND gate 25 with the register 82 (which is not shown). The bound. The 6-digit bit combination for a print-coded arrangement of the holes in the character 40 character and the associated parity bit, which are received by the disk 108 and the character on the RCXO-S print data receiver, match, so that when a certain character is which comes via the AND gate 25 on receipt of a "Einhen in printing position, the this character write data" signal LD in the data register 82 corresponding code from the photoelectric set. The generation of the signal LD is further scanned by the scanning device of the drawing disk. 45 described below; this signal indicates whether that includes the print drum and the end of a line-re- printing unit for a gespeiferenzscheibe in the unit RCXO-S 109, which is ready to shoot in the character disc einge- chertes characters. If the signal builds or runs as a separate disc and so LD is pending as a one signal, the stored can be encoded that they drum rotation an end-of-line reference signal 50 82 switched through at the end of a print character via the AND gate 25 in the data register .

ZR delivers. . The data buffer run time chain 80 may include the

The mechanical printing device also includes a wide variety of forms and a front line marking drum 110, which is attached to the paper direction, with the help of which the in the barrel feed mechanism is connected and continuously rotates around this with time-chain stored information in order to keep the paper line-by-line will. Practice the runtime of the runtime chains. The line marking drum contains a her- can be divided into several sections - z. B. conventional pulse generator whose pulses each indicate with the help of taps 80 a and register taps line that the paper is being transported. 82 a - the format control tape 115 chosen for illustration is also on the ring 9 bits long, with each bit 500 nano paper drive mechanism arranged and rotating 60 seconds wide. A 9-bit register (82, 83) associated with this. The format control tape can be a perforated strip encoded with the beginning and end of the transit time chain (80, 81) , so that a ring memory is created, as will be described in detail. A parallel writing and reading of the data and paper feed motor (not shown) drives the Pa address information. Although the writing-in pier feed mechanism is carried out with the aid of a slip clutch (not parallel, the information is also shown serially). The devices 110 in the ring buffer. The information from the data and 115 are only briefly mentioned here for the sake of completeness and parity receivers RCXO-5 (multi-digit binary mentioned. The mechanical printing device can sign + parity bit) are the data registers

9 10

and waiting for a free period. After the characters from the external operating The time segments are each identified by an identification device all in the runtime chain 80 and the entry bits, and if a time segment-speaking addresses in the runtime chain 81 is set, the identification bit is "set". A stores are, the printing unit causes the print binary switching unit LU checked for this purpose S sequence as follows. A coded character is the taps 80 a and 82 a. When the data from the character register 102 is passed into the data and registers 82 from the data and parity receivers, type wheel comparison circuit 90. If a character was supplied from RCXO-S , the characters formed by 6 bits are checked as the current time segments; if ... a free time segment just coming into print position is decoded, ie a time segment without a "true" io remains in the comparison circuit 90 while all identification bits are determined, the character in the data run time chain 80 is generated by the Since switching unit LU a 1 signal LD, so that the characters circulate tenregister 82 and are compared with the encoded via the AND gate 25 together with a clock character from the character register 102, bit is transferred into the data register 82; If the comparison is positive, the RCXO-5 is deleted. Thus, with 15 AND element 29, a through- connection signal GT circulates, each print character a 9-digit bit combination around the corresponding addresses from the address register via the transit time chain 80; this 9-digit binary code 83 in the address buffer memory 88 through zuzubination for each character contains 6 bits per print switch. So if the comparison between a character, a parity bit, a clock bit and an identifying character in the data register 82 and a character on zierungsbit. The switching mechanism LU also generates the 20 of the printing drum, which approaches the print position "store address" signal LA at the same time as the positive, directs the address buffer memory generation of the signal LD. rather 88 an 8-bit code from

The signal LA is a binary switching element 27 address register 83 for the decoding matrix 98 of the

fed, whereby the contents of the address counter hammer control unit. The decoding matrix 98 de-

85 is switched through into the address register 83. 25 encodes the 8-bit character from

Further, the signal LA becomes the address counter 85 address buffer memory and supplies a signal to an

fed to the stored address by one of the 136 hammer driver stages. When the sign is on

Counting one step further. The address counter 85, which comes into the printing position of the printing drum 105,

at the end of each print cycle, the clock signal CHPT from the mechanical occurs again and again

a 1-signal GT is reset, the 30 printing device (disk 108), which the ham-

Address register 83 ignites via the binary switching element 27 mer driver stages 99 and the corresponding

an 8-bit address code. Hammer 106 causes drum 105 to move

The operation of the address register 83 is to hit and print the character. The GT signal is identical to that of the data register 82, with also resets the address counter 85,
except that no identification or clock bit is used, and the 8-bit address code is assumed that the character "C" is stored in the first, not in the register, while a par, third and fourth column are to be printed out, the ity bit is generated serially. The 8-bit address is then The external operating device supplies the stored in the runtime chain 81, and since the code for the character "C" is first synchronized in the runtime j time chains 81 and 80, a 4 ° chain appears to be inserted Characters, the third character to be inserted into the ι is the address code, always in the address register 83, runtime chain, etc. Every time the corresponding information in the data times when the character "C" from the outer control register 82 appears. After the addressing device has been written in and a free period of time is found in the address register 83, the address counter is found in the runtime chain 80, the 83 is incremented by 1. So while each character 4-5 coded character "C" is received together with the identification from the external operating device, the clock bit and the parity bit in the, it is stored simultaneously with the storage of the data register 82, while the in the corresponding address in the Address delay chain .Adressenzähler 85 address contained in the address 81 in the data delay chain 80 is stored. When senregister 83 is stored. Since the character "C" is to be received from the outer operating device 5 ° as the first, third and fourth character from the outer operating device stored in the run-time chain buffer memory 80, the character does not need to wait for the address counter to receive the Addresses "1", "3" and "4" are stored in the address register for a certain period of time in the circulation cycle. When all of the delay chain 80 is free. The characters to be printed can be received from the external operating system asynchronously and in any free 55 voltage device and the printing time period (which is indicated by an "incorrect" identifier, the characters in the prescribed sequence bit) can be saved. If the sequence is to be printed out, coded characters are made up of characters, that is, they run in any order over the character register of the data and type wheel verdie transit time chain 80, while the corresponding circuit 90 is supplied. When the row of addresses for the characters synchronously ^{approaches the print runtime chain 81 in similar random order via the 6o of} the "C" characters on the printing drum, the character "C" will circulate. Comparison circuit 90 supplied. During this

The invention takes into account the considerable coded characters in the comparison circuit 90 anDifferenz The characters in the runtime chain 80 run at the speed at which it stands , Characters on the print drum in print position 65 through the data register 82 and are entered, and the speed at which a line compares with the "C" in the comparison circuit circulates in the run-time chain buffer. resembled. The character "C" appears in the runtime dies is explained in more detail below. chain 80 at three different times; the first

It appears once when the address in address register is "1", the second time when the address in address register is "3", and it appears for the last time when the address in address register 83 is "4". In all these cases of a match or a positive comparison, the address buffer memory is switched through so that the addresses "1", "3" and "4" are switched through the address buffer memory to the decoding matrix in order to set the first, third and fourth hammer driver stages . When the clock signal CHPT then arrives from the mechanical printing device, the first, third and fourth hammers are ignited so that they strike the drum as soon as the row of "C" characters coincides with the printing hammers. Since only the first, third and fourth hammer driver stage were set, the character "C" is only printed in the first, third and fourth column.

As already mentioned, a wide variety of runtime chains can be used; it has however found that a reliable and not very expensive run-time memory is easy to use in itself known magnetrostrictive and acoustic transit time chains can be produced. It turned out that such runtime chains can easily be synchronized so far that the in the Address runtime chain returning address is available in the address register if the corresponding Character that runs back into the data runtime chain is present in the data register.

Another essential advantage of the printing unit according to the invention is the principle of recognizing special characters in order to be able to insert many spaces in a printing cell. The reader should read the appendix first to understand what follows. In Fig. 2 it is shown that the data receivers RCXOS receive a coded character consisting of 6 bits. The six lines over which the coded character is fed are shown in FIG. 2 labeled with the valencies assigned to them 2 °, 2 ¹ , 2 ² , 2 ^S , 2 ⁴ and 2 ^5. The characters consisting of 6 bits are fed from the data receivers to the special character decoding network 53 of the print control unit. As is explained in the appendix, one of the special characters which has a specific meaning in the printing unit according to the invention is referred to as “ellipsis characters”. The ellipsis is defined as a binary "one" in all 6 binary digits of the character code. The special character decoder 53, which receives the 6-bit character from the data receiver, decodes the ellipsis and pays special attention to the character following the ellipsis. If the character following the ellipsis is encoded in the form 10.XXOf, the second character is interpreted as a "jump character".

Due to a special code sequence, the printer is able to skip several columns when it receives a “skip columns” character. If the data receivers transmit a received character to the special character decoder 53 and the special character is decoded as an ellipsis and if the character received as the second character has the form 10 XXXX , then the second character is interpreted as a jump character. The number of spaces to be skipped is contained in the jump symbol and is represented by the least significant binary digits of the 8-digit binary symbol. Thus, the jump character 10 XXXX indicates that the number of columns to be skipped is equal to the number represented by the decoded XXXX . The binary code used for the number of columns to be skipped in the jump symbol can be very different; However, the following evaluation of the individual binary digits has proven to be extremely advantageous

o indicated when 136 printing columns are used.

2 ° -bit true = 8 spaces,

23 2 ² 2 ¹ 2 °

\ 0 X X X X

2! -Bu true = 16 spaces, 2 ² -bit true = 32 spaces, 2 ³ -bit true = 64 spaces

If you assign the individual bit positions in the Weights given in the table, then any number up to 120 spaces in

such a print line can be skipped in steps of eight. The circuitry implementation of this principle is shown in FIG. 2, that is, a signal FCSX (column jump signal) is fed to several AND gates. These AND elements 140, 141, 142 and 143 are connected on the one hand to the data receivers RCXO-S and on the other hand to the four least significant binary digits "of the 6-digit binary character fed to the data receiver. The AND element 140 receives the bit of digit 23, the element 141 the bit of position 2 ² , member 142 the bit of position 2 ¹ and member 143 the bit of position 2 ° The occurrence of a "true" state in any of the least significant binary positions 2 ° -2 ³ results in the addition of a 4-digit one Binary character into the address counter 85 via a decoding and incrementing circuit 85a, as shown in Fig. 2. The address counter 85, which operates as described above, is incremented by the number of spaces, that of the 4-digit binary character of the least significant digits of the jump character being represented.

The following table should serve to further explain the meaning of the jump symbol:

45 Binary digit 2 = 2 ⁴ 2 ³ 2 ² 2 ¹ 2 » X decoded as jump mark Receive sign 11111 1 decoded as an ellipsis Receive sign 1 OXXX

The address counter is incremented according to XXXX as follows:

0001 = 8 spaces

0010 = 16 spaces

0100 = 32 spaces

1000 = 64 spaces

(or any combination from above)

In addition to the usual switches on a control panel, the printing unit contains several switches with which not only have certain characters to be printed out, but also a line with a predetermined character arrangement can be selected. So are z. B. Character arrangements like »123 123« or »123123«

particularly suitable for aligning the hammer. In the case of previously proposed printing works, however, must every character and space can be stored to make the repetitive arrangement reach.

The in F i g. The data receiver RCXO-5 shown in FIG. 3 is provided with a plurality of switches 150, each of which represents one bit of a seven-digit binary character which the data receiver RCXO-5 normally receives from the external operating device. Each switch is labeled according to the value of the binary digit assigned to it. The switches are ^{labeled with 2 5} - 2 ° and P (parity bit). The binary-coded character that the data receiver normally receives can be simulated by setting the individual switches 150 to either the "0" or "1" position. The binary-coded character obtained in this way is set in the data register 82 via a binary switching element 25 ', in a similar manner to the normal storage of the data in the data register 82. The switching element 25' switches the six-digit binary character only when it receives a write-in signal LD ' ( the simulated signal LD) into the data register 82. In order to simulate the write-in signal LD ' , a switch 153 is provided which, when actuated by the operator, simulates the write-in signal and thereby switches the six-digit binary character present at the switching element 25' through to the data register 82. The same write-in signal from switch 153 is fed to binary switching element 27, which switches the content of address counter 85 through to address register 83. The address counter 85 is incremented in the usual way (that is, the address counter counts one step further with each address that is written into the address register. As long as the switch 153 remains closed, the binary character specified by the switches 150 is continuously converted to Data register 82 is written, while the addresses set by address counter 85 in address register 83 are increased by 1 until the runtime chain buffer memory is full However, in order to be able to insert a repetitive sequence of characters, a word character write switch 158 is provided which inserts an address counter jump switch 159 into the address counter circuit. The address counter jump switch 159 contains three switches 160, each with a binary "0". or "1" used ht can be. The three-digit binary character which is fed to the address counter 85 in this way causes the counter to continue counting in steps of eight. If a character is set in the data receiver with the aid of the switch 150 and the switch 153 is actuated, the character is set or written into the data register 82. The addresses which are simultaneously set in the address register 83 follow a sequence of every eighth address. The starting address of the address counter (which is normally set to 0) is determined by the three-digit binary character selected by switches 160. The three-digit binary character can be selected so that the character is placed in the data receiver at an address starting with 0 to 7 (corresponding to the print columns 1 to 8). The interpretation of the three-digit binary character given by the setting

.. the switch 160 is specified, is a simple binary code; however, to get closer to the result of the code to explain, the following table may help

be: . .

Bit combination split In columns the switch 160 QcS emerged
Character printed characters 000 8th 8, 16, 24 ... 136 001 1 1, 9, 17 ... ... r: 010. ■, ■ ■ - 2 ■ ■■ 2, 10, 18 ... 011 3 3, 11, 19 ... 100 4th 4, 12, 20 ... 101 5 · 5, 1.3, 21 ... 110 6th 6, 14, 22 ... 111 7th 7, 15, 23 ...

The sequence of a repetitive character string that is maintained during test storage can be as follows The data receiver switches 150 can be set to be alphanumeric Represent character "1" and the address counter skip switches 160 can be set to as it corresponds to the binary combination 001. The switch 153 can then be operated so that the character "1" is set simultaneously with the address "one" via the switching element 25 'in the data register will; then it is set again, whereby the address counter jumps to "9", then it is set again, whereby the address counter jumps to "17" etc. This process is repeated until the Address counter has counted to 136 and the alphanumeric character "1" in the data register and the corresponding Addresses 1, 9, 17, etc. are set in the address register. The alphanumeric character "2" can then be set using the data receiver switch 150 and the address counter jump switch 160 can be set to the binary combination 010. Again the switch 153 is operated, and that alphanumeric characters »2« ζμ83ΐηΐη6η with the Addresses "2", "10" and "18" are placed in the data register until all of them are in the address counter Addresses are used. The process is then repeated for the alphanumeric character »3«, where the address counter skip switches 160 are set to produce the binary combination 011. The alphanumeric character "1" is then placed back into the data register, with the exception that is, the address counter skip switches 160 are now set to use the binary combination 100 deliver. This process continues until all eight possible bit combinations of the address counter jump circuit 160 are used. When the print cycle is then triggered, the printing unit prints repeating character strings, in the example chosen for illustration the sequence "1231231".

So you can see that any desired character sequence can be created with the help of the. Data receiver circuit 150 can be set and that the type of repeated characters and subsequently entered characters can be specified by setting the address counter jump switch 160 accordingly . nen. Because the printer is able to repeatedly print out "* preselected character strings,

becomes the one required to adjust the print hammer Significantly reduced time.

attachment

The command information includes feed commands (i.e. move the paper vertically), print commands,

a command to query the status of the printer and a reset command. For the sake of completeness commands are also listed here which relate to features that are necessary for an understanding of the invention are not strictly necessary. The commands are coded as follows:

X
X 2 * 2 ³ 2 ² · ■ 0
0 2 ° Feed commands
No feed information in the Be
wrongly planned X X
X X
X X
X 1 0
1 Feed by one line X X X X 1 0 Feed by two lines 0 X X X X 1 Feed up to the top paper
edge 0
1 1 1 0 X
X X Print commands
Print a line in the editor
operation 0
1 0
1 1
0 0
0 0
0 X
0 Print a line in non-redi
greed 0
0 0
0 0
0 0
0 Do not print ■ .. Other commands
Query printer status
Reset printer status ....

Both the pressure and the feed information can be combined in one command character. For example, a single command can say: print a line in editing mode and move (or turn) the paper forward 2 lines. Such a command could be through the bit combination 011010 are shown. If the command contains both pressure and feed information, is printed out first, and the feed takes place immediately afterwards. There are two modes of operation intended: the editing operation and the non-editing operation. There are a few in the editing business Characters that, when fed to the printer as part of the print line data, have a special Have meaning and are treated as follows:

Ellipsis (111111)

If the printing unit receives this character as part of the print line information, this means that special attention must be paid to the character following the ellipsis, as follows:

a) ellipses followed by
Character QXXXXX

If the character following the ellipsis character ^{contains a zero in bit or binary position 2 5} , it is treated as a carriage return character in the manner described below. Both the ellipsis and the feed character are removed from the print cell.

b) ellipses followed by
Character \ 0XXXX

If the character following the ellipsis has ^{a 1 in binary 2 5} and a zero in binary 2 ⁴ , it is treated as a jump character, as described below. Both the ellipsis and skip marks are removed from the print cell.

c) ellipses followed by
Character 11 XXXX

If the ellipsis character following the ellipsis in positions 2 ⁵ and 2 ⁴ contains a one, but is not another ellipsis, both the ellipsis and the following character are removed from the print line. If the ellipsis following one character is another ellipsis, both are removed from the print cell and the following character is printed.

(Question mark (001111)

When a question mark follows two consecutive ellipses, the ellipses become is deleted and the question mark is printed as "?". If there is a question mark, it is not immediately precede two consecutive ellipses as part of the print line information is received, it is deleted and the remaining print line characters are retained.

409 533/304

Space character (010000)

When a space character not immediately preceded by an ellipsis is received as part of the print line information, a space corresponding to a character is left blank in the print line. When a space character not immediately preceded by an ellipsis is received as part of the print line information, a space corresponding to a character is left blank in the print line. A space character preceded by a single ellipsis is interpreted as a carriage return character. If two consecutive ellipses are followed by a space character, the ellipses are deleted and the space character is printed as b (oblique b).

Jump sign (space followed by 10 XXXX)

When a jump mark is received, the printing unit pushes as many spaces into one print line one as indicated by the least significant four bits of the jump mark, which are the following Weights are assigned:

2 ° bit = 8 spaces,

2 ¹ bit = 16 spaces,

2 ² bits = 32 spaces,

2 ³ bits = 64 spaces.

Any combination of these four bits can be. be set. This way you can help with of the jump sign, up to 120 spaces can be inserted into a pressure cell.

For this purpose 2 sheets of drawings

Claims (12)

Patent claims: 1. Parallel printing unit for printing in several columns, with these columns assigned Print hammers and with a data buffer memory for receiving encoded data signals for a print line and a data register that connects to the data buffer memory to form a data ring memory is interconnected for the circulation of the stored data signals, furthermore with a comparison circuit which, when data signals in the data register match type setting signals of the printing unit emits comparison signals, characterized in that an address buffer memory (81) is provided is for receiving address signals which are each in the data buffer memory (80) in the next free memory location entered data signals are assigned when they are entered are generated and correspond to the print columns that the address buffer memory (81) with an address register (83) for circulating the stored address signals to an addressing memory is interconnected so that the circulation of the address ring memory (81, 83) is synchronized with the circulation of the data ring memory (80, 82) and that when a comparison signal occurs from the comparison circuit (90) that at this point in time in the address register (83) located address signal the print hammer (106), the one assigned to the address Controls column for the stop. 2. Printing unit according to claim 1, characterized in that an address counter (85) with is connected to the address register (83) which sets addresses in the address register containing the Correspond to the print columns in which the information is to be printed. 3. Printing unit according to claim 1 or 2, characterized in that both buffers consist of a delay line or delay chain connected to the respective register are connected to a ring buffer. 4. Printing unit according to claim 3, characterized in that the delay lines or delay chains are magnetostrictive delay lines or delay chains. 5. Printing unit according to one or more of claims 2 to 4, with a rotating printing or type drum, on the circumference of which characters or types are arranged in several columns, and with a plurality of print hammers, which are arranged in the vicinity of the drum, to hit the Character to hit, with several data receivers, which are connected to an external operating device connected to receive a binary coded character and with a binary Switching element that "store" the binary-coded character in the on the basis of a command signal Data ring memory transmits, characterized in that also on the basis of the command signal "store in" at the same time as the transmission of the binary-coded character in the data register (82) the address from the address counter (85) is transferred to the address register (83). 6. Printing unit according to claim 5, characterized in that the data ring memory in several Time segments (80 a, 82 a) is subdivided, the duration of which is so dimensioned that a binary coded Characters and an identification bit can be accommodated, and that the address ring memory in several time segments is subdivided, the duration of which is such that it accommodates an address of a printing column can be. 7. Printing unit according to claim 6, characterized in that the binary-coded characters each is transferred to the data register according to the binary state of the identification bit (0 or 1), while at the same time the address of the print column is transferred to the address register. 8. Printing unit according to claim 7, characterized in that a decoding matrix (98) is provided into which the switching signal (GT) switches through the addresses from the address register (83) via a binary switching element (29) in the event of a positive comparison, and that the decoding matrix triggers the print hammers associated with the print columns represented by these addresses. 9. Printing unit according to one or more of claims 5 to 8, the data receivers of which receive binary-coded characters and commands, characterized in that a decoder (52; F i g. 2) is connected to the data receiver, which receives encoded commands from the data receiver and Upon receipt of a predetermined command, a jump signal (FCSK) generates the address counter - which is normally counted one step further by each of the coded characters received by the data receivers - via binary switching elements (140 to 143) with each of the data receivers received, binary-coded characters advances by more than one step. 10. Printing unit according to claim 9, characterized in that when the address counter is around more than one step is advanced, the number of steps from a part of the predetermined Command codes is determined, for each binary-coded character that the data recipient obtain. 11. Printing unit according to claim 10, whose jump signal from a predetermined combination binary digits, characterized in that the number of counting steps of the Address counter from the bit combination of at least the two least significant bits of the predetermined Combination of binary digits is determined. 12. Printing unit according to one or more of claims 5 to 11, characterized in that that switches (150) are provided, with the help of which a logical sequence of non-consecutive Addresses is set to generate a repeating arrangement of To facilitate printing characters that a manually adjustable test switch (158; Fig. 3) with the Address counter (85) is connected to the address counter with each received from the printing unit binary coded characters by more than one step, and that several manually adjustable address counter snap switches (160) connected to the address counter 3 4 are, each of which is in one of the binary ribbon and the paper are between the heme number "0" or the binary number "1" and placed on the rotating drum; there Position can be brought with the binary hammer ribbon and paper against the rotiecodierte Sign that the drum has to beat through the positions and there the drum This switch (160) is shown, which carries the initial 5 type, is the control of the time in number of address counter determined. the hammer hits the drum, critical. All hammers must be at exactly the same instant relative to the surface position of the drum on the Hit the drum. In addition, the hammers lo mer be oriented and arranged so that each printed characters is precisely aligned with the other characters on a print line. The invention relates to a parallel printing unit for From US-PS 2 954 731 is a parallel printing the printing in several columns, with these columns work known with a rotating type drum associated print hammers and with a data 15 and a type generator buffer memory permanently connected to it for receiving coded data signals tor, one of which is in the printing position for one print line. and a data register, the type line corresponding to the electrical type the data buffer memory to a data ringing signal generated, with a buffer core memory memory for the circulation of the stored data for storing the time signals to be printed out line by line is connected together, furthermore with a processor, and with a comparison circuit in which the synchronization, the characters stored in the buffer core memory when data match Signal signals in the data register with type position one after the other with the type position signal the printing unit outputs comparison signals. "will be similar and a signal if they match Such parallel printing units (US-PS 2766 618) is delivered to an address comparison metrix, are used together with other peripheral devices, 25 This address comparison matrix is synchronized by hereinafter also referred to as »external operating device. an address generator working as a Zafifer gen «of the printing unit, the address of the relevant character identification systems on the data processor connected. Since it is essentially driven and stored in the drawing signal work slower than data processing systems, a downstream address buffer and it is common to have a control signal for the system at the same time with several 30 a further printer memory peripheral devices or devices - put the print hammer in the column in which the to work to get a data processing-related character printed according to its address to make full use of the system in terms of time. The efficiency should be. of the entire data processing system, including to the pressure storage unit such parallel the peripheral devices, which can consequently be simplified by printing units, has been proposed Use of peripheral devices with much larger delay lines or delay chains than storage information processing speed considerably more likely to be used and improved by the external operator will. Therefore encoded characters must be received at the data processing device Printing units connected to processing systems due to constant circulation in the delay glue can print at high speed without saving 4 °. A disadvantage of this arrangement that the quality of the print suffers. consists of the delay line Even if the printing unit is in the so-called »Off-site restriction of the access time. Since the in Line «operation of another peripheral device of the line stored characters for printing is controlled, the speed is a decisive must be in the correct sequence, must be a The factor with regard to the temporal efficiency received from an external operating device of information processing, since the genes character will wait in a register until Printing unit is much slower than the peripheral the right time is reached in which it is in the Device - a magnetic tape recorder - is that very often delay line can be inserted. There connected for off-line operation. the information in the delay line constantly It is known that in parallel printing units the incoming 5 ° revolves, so it may be that the incoming The type of buffer memory mentioned above is to be used in characters for the duration of the entire runtime of the which information from the central data processing delay line must wait before the vorgetungswerk or reached by the external operating device on the delay line until later use by the printer to insert the print line character, work can be saved. This means that the data processing units can be used again. Another disadvantage of known parallel printing devices is that in the case of printing columns with dual tasks while there is the pressure chamber, the external operating device for Werk is left to decide when to print out the data. any space included in the print line The use of a ro-be proved to be an encoded character to the must deliver animal drum with applied marking 60 printing mechanism. As for data processing as useful. This printing or type drum systems provided printing units often contain information several printing columns, which in turn print out with nen at spaced apart places an annular arrangement of printed characters must, for. B. in tables in the form of columns that are provided. The signs are therefore in columns - have large spaces between them, the outer must be ordered, and all similar signs lie next to each other in a comparatively large manner, so that when the printing drum rotates, deliver a number of command characters to the printing unit, successive series of similar characters with a corresponding computer and printer time Row of print hammers ^ face each other. That is consumed.